EP3632726A1 - Air diffuser for a vehicle - Google Patents
Air diffuser for a vehicle Download PDFInfo
- Publication number
- EP3632726A1 EP3632726A1 EP19382867.0A EP19382867A EP3632726A1 EP 3632726 A1 EP3632726 A1 EP 3632726A1 EP 19382867 A EP19382867 A EP 19382867A EP 3632726 A1 EP3632726 A1 EP 3632726A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guiding means
- wall
- air
- air diffuser
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/34—Nozzles; Air-diffusers
- B60H1/3414—Nozzles; Air-diffusers with means for adjusting the air stream direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
- F24F13/062—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser having one or more bowls or cones diverging in the flow direction
Definitions
- Air diffusers are known in the state of the art, installed in instrument panels, with the aim of directing the air towards the interior of vehicle cabins.
- these elements have a plurality of blades, a first group of blades in the area furthest away from the passenger compartment to direct the air in a first direction and a second group of blades in the area closest to the passenger compartment to direct the air in a second direction, with this second group of blades being visible.
- the fact that there is a plurality of blades in the dashboard area means that a lot of space is occupied, with the aesthetic disadvantages that this also implies. For this reason, it is currently intended for the blades of the diffusers to be hidden from the users of the vehicle and for the air outlet slot to take up less space.
- EP1331116 The disadvantage of EP1331116 is that the air outlet opening is not optimally directed. This is because, in order to achieve a good Coand effect, the air must be adhered to the arched surfaces inside the cavity in the outlet zone, in such a way that the air is clogged up in that zone. In document EP1331116 , however, the air is clogged up in the air inlet zone of the diffuser cavity by means of guidance, and then expanded in the zone closest to the air outlet. The widening of the channel in this zone causes the air flow to not be channelled. On the other hand, this solution implies having two elements, a guiding means and another clogging element, which implies greater complication in the assembly.
- This invention deals with a diffuser for a vehicle interior with a guiding means in the form of a central blade, arranged inside a cavity of the air diffuser.
- the guiding means can be moved from the upper zone to the lower zone of the cavity and vice versa, having a plurality of intermediate positions in which two air channels are created.
- the guiding means closes one of the two channels.
- the guiding means is parallel to the inner surfaces of the cavity, in such a way that the narrowing of the air in the casing outlet is optimal.
- the movement of the guiding means is a displacement. In this way the parallelism is kept constant in all the positions of the guiding means, achieving an optimal direction and not penalising any position. At the same time, it simplifies both the complexity of the system, minimising the number of components that make up the set, and the movement of the guiding means itself, improving its reliability.
- the guiding means or central blade defines a parallel shape, at least in the outlet zone, the direction being right in the air outlet zone, the direction achieved is optimal, since the channel does not expand, losing the direction of the channel, or encounter obstacles before the exit.
- the closing of any of the two channels is originated by means of the guiding means itself, blocking the exit of air through one of them.
- the present invention consists of an air diffuser for a vehicle where the air diffuser comprises a casing, where the casing defines an air inlet opening, an air outlet opening, and a cavity, where the cavity is arranged between the inlet opening and the outlet opening, where the casing comprises a first wall and a second wall, where the first wall is facing the second wall, where the first wall and the second wall define a narrowing of the cavity to the outlet opening, where the air diffuser comprises a guiding means arranged in the cavity, where the guiding means comprises a first end close to the outlet opening.
- the guiding means is displaceable between a first position, where the first end is arranged adjacent to the first wall, and a second position, where the first end is arranged adjacent to the second wall.
- the guiding means constricts the air against one of the walls of the inner cavity, partially or completely blocking the outlet through one of the channels.
- Adjacent means that it is contiguous or located in the vicinity, being possible that the first end comes into contact with first wall, in the first position of the guiding means, or with the second stop, in the second position of the guiding means.
- the guiding means can be moved in a number of intermediate positions between the first position and the second position, in such a way that in each intermediate position the guiding means divides the cavity into two channels.
- the desired effect is to generate better air routing in the area next to the air opening in all positions.
- the guiding means is configured to control the ratio between the upper and lower flow, in such a way that the flows are equal in a horizontal position.
- the casing comprises at least one guide, where at least one guide defines a displacement of the guiding means between the first position and the second position.
- the guiding means is displaced between a plurality of positions with high precision.
- the displacement of the guiding means comprises a third position where the third position is intermediate between the first position and the second position, where the first end of the guiding means is far from the outlet opening, the guiding means being in this third position. In this way, freeing each of the output channels from obstacles reduces the load loss.
- the displacement of the guiding means comprises a straight or linear movement between the first position and the second position.
- the straight line or linear displacement to be followed by means of guidance simplifies the structure of the air diffuser, reducing the number of mechanisms required.
- the first wall comprises a bottom edge and where the second wall comprises a top edge, where the top edge and bottom edge define the outlet opening.
- the guiding means faces the edge in the area of the air outlet by blocking the air outlet through one of the channels in the first and second position.
- the upper and lower edges are in a plane substantially perpendicular to the direction of airflow in the cavity. This results in a symmetrical structure of both the casing and the cavity defined by the casing. Depending on the position of the guiding means, a deviation of the air outlet flow in a first direction or in a second direction of equal quantity is thus achieved.
- the air outlet to the interior of the vehicle through either of the two channels has optimum intensity and routing.
- the upper edge and the lower edge are comprised in a plane substantially inclined with respect to the forward direction of the air in the cavity. This results in an asymmetrical structure of both the casing and the cavity defined by the casing. Thus, a deviation of the air outlet flow in a first direction or in a second direction is achieved, depending on the position of the guiding means, of different quantity.
- this particular geometry enables the air range field to meet the requirements that the air extracted by the outlet opening directly contact the waist of an passenger arranged inside the vehicle and up to a zone above the passenger's head.
- the lower edge is positioned forward of the upper edge in the direction of airflow in the cavity. In this way, the air is directed more optimally towards the upper part of the interior.
- the first end is arranged in flush position with the lower edge, the guiding means being in the first position, and where the first end is arranged in flush position with an upper edge, the guiding means being in the second position.
- the flow does not find any exit, wall or obstacle that deviates the direction of exit, improving the direction of air of the diffuser.
- the walls that define the cavity are continuous, in order to prevent the air flow from encountering possible obstacles that create interference.
- the guiding means comprise a lower surface facing the first wall, and an upper surface facing the second wall, where at least one area of the lower surface is substantially parallel to the second wall, with the guiding means in the first position, and because at least one area of the upper surface is substantially parallel to the first wall with the guiding means in the second position.
- the parallelism between the guiding means and the walls that define the cavity allows an optimal direction of the air flow.
- the two channels comprise a constant section, without narrowing or widening said section. This constant section is independent of the position of the guiding means.
- the upper surface of the guiding means is symmetrical to the lower surface of the guiding means with respect to an axis, where the axis is parallel to the air outlet direction. This ensures that the upper airflow and the lower airflow are equal.
- the guiding means being in the first position
- at least one area of the lower surface comes into contact with first wall, the guiding means being in the second position.
- the gap created between the guiding means and the walls is reduced, preventing more air from becoming clogged and creating turbulence or interference.
- the first and second walls are concave.
- the Coand effect allows the air to adhere to the walls following their trajectory. This results in a widening of the cavity and, subsequently, a narrowing of the cavity in the direction of air flow.
- the narrowing of the airflow is constant and may be constant or of greater quantity in the area near the outlet opening.
- the output comprises a single slot. This eliminates visible horizontal blades and directs the airflow in all directions via this slot.
- the present invention in its simplest form, presents a diffuser for a vehicle interior integrated into the dashboard with a single slot, in such a way that all the horizontal blades are eliminated.
- the air flow is directed in all directions in the vertical plane from a manual or electrical kinematics by positioning the central or guiding means blade in different positions within the diffuser casing.
- Figure 1 illustrates a perspective view of the interior of the passenger compartment of a vehicle 1 with an air diffuser, including an outlet opening 22 and a slot 222.
- One of the objectives of this invention is to reduce the size used for the air outlet slot 222, reducing the surface seen by the user from the inside of vehicle 1, in such a way that the slot is as narrow as possible.
- the height of the slot seen from inside the cabin of the outlet opening 22 has a height less than 20 mm and is preferably 12 mm.
- the horizontal blades on the outside of the diffuser, as currently used, are removed, leaving a single rectangular slot 222 in the board. This reduces the space used for the air outlet and by means of a single guiding means 33 the air can be directed in all directions in a vertical plane following a movement of displacement of a guiding means 3.
- the outlet opening 22 is a single slot 222.
- This unique guiding means 3 manages to direct the flow of air out of the outlet opening 22 in one of the directions, e.g. in a vertical direction of the flow out of the outlet opening 22.
- at least one horizontal blade would be required, placed in the part closest to the inlet opening 21.
- figure 2A presents a first cross-section view of an air diffuser for a vehicle 1, with the guiding means 3 in the upwardly displaced position.
- the diffuser comprises a guiding means 3 arranged in a cavity 23 defined by a casing 2 comprising a first wall 24 and a second wall 25, the cavity 23 being found after the inlet opening 21, following the forward direction of the air duct 26, and before the outlet opening 22.
- the first wall 24 and the second wall 25 are facing each other and, in a preferential way, they narrow until the outlet opening 22.
- the purpose of the guiding means 3 is to guide the air in the outlet opening 22 area towards the top and bottom of the passenger compartment, in a vertical plane.
- the geometry of the guiding means 3 in combination with the inner walls of the casing 2 allows air to constrict against the walls and outlet cavity 23 with greater intensity in the area of the outlet opening 22.
- the outlet opening 22 comprises an upper edge 223, a slot 222 and a lower edge 221, in such a way that an outlet opening 22 is formed between the upper edge 223 and the lower edge 221.
- the guiding means 3, comprises a first end 31, generating at least one air duct 26 flow.
- FIG. 2A shows the guiding means 3 in the upward position.
- An air duct 26 can be seen below the guiding means 3, which exits through the outlet opening 22 in an upward direction.
- the guiding means 3 is displaced in a first position.
- the guiding means 3 is arranged in a position adjacent to the second upper wall 25, blocking the passage of an upper air duct 26, forcing the air to constrict against the lower wall 24.
- the lower surface 32 of the guiding means 3 is parallel to the lower wall or first wall 24 of the casing 2, at least in the area close to the outlet opening 22.
- both the first wall 24 and the lower surface 32 are both inclined upwards in relation to a plane parallel to the air inlet in cavity 23, in such a way that the air exits through the slot 222 upwards.
- the first end 31 is flush or aligned with the lower edge 221, in such a way that the air does not encounter obstacles in the path, in such a way that the lower surface 32 and the upper edge 223 form a continuous surface.
- at least one area of the first wall 24 comes into contact with upper surface 33 of the guiding means 3.
- the contact zone is the zone closest to the air outlet opening 22, to optimise airflow routing and avoid a drop-in pressure. The more surface is in contact, the less gap is generated between the two, in such a way that less air is clogged, avoiding the interference that this may generate.
- FIG. 2B shows this, a second lateral section view of an air diffuser for a vehicle 1, with the guiding means 3 in a position displaced downwards, in according to the present invention.
- the guiding means 3 is displaced in a second position.
- An air duct 26 can be seen above the guiding means 3, which exits through the outlet opening 22 in a downward direction.
- a channel 26 is created which is adhered to the second wall 25 at least in the area next to the outlet opening 22.
- the guiding means 3 in this lower position blocks the passage of an air duct 26 adhered to the lower zone, forcing the air to constrict against the upper wall or second wall 25.
- the upper surface 33 of the guiding means 3 is parallel to the lower wall of the casing 2, at least in the area of the outlet opening 22. Both describe a downward slope with respect to a parallel plane to the air inlet in cavity 23, in such a way that the air exits through the slot 222 downwards. More specifically, the first end 31 is flush with the lower edge 221, in such a way that the air does not encounter obstacles in the way. In a preferential way, at least one area of the first wall 24 comes into contact with the bottom surface of the guiding means 3.
- Figure 2C shows a third cross-section view of an air diffuser for a vehicle 1, with guiding means 3 in a neutral position.
- the guiding means 3 is in an intermediate position, horizontally parallel to the plane of air inlet to cavity 23.
- the air enters through the inlet opening 21 and adheres to the first wall 24 and the second wall 25 when there are no obstacles, creating an upper channel 26 and a lower channel 26.
- the ratio of the volume of the upper and lower flow is proportional.
- the upper surface 33 of the guiding means 3 is symmetrical to the lower surface 32 of the guiding means 3 with respect to a first axis 34 parallel to the air outlet direction.
- the shape of the first wall 24 and the second wall 25 are concave, at least in the area of the outlet opening. This produces the Coand effect, which causes air to adhere to both the upper and lower walls, and exit through the slot in the direction that the wall geometry would follow.
- the guiding means 3 is positioned in a plurality of intermediate positions by dividing the cavity 23 into two channels 26. In these intermediate positions, the lower channel 26 or the upper channel 26 is not fully closed by the guiding means 3. This generates a mixture in the air outlet of the upper and lower flow. In the event that the flow with the highest flow is through the lower channel 26 and the flow with the lowest flow is through the upper channel 26, both would come together in the area of the outlet opening 22 and the resulting direction of this mixture would be slightly towards the upper area of the passenger compartment.
- FIG 3A it is possible to observe, according to another mode of embodiment, a first view on the side of the diffuser section, with the guiding means 3 configured to make a straight line 35 or linear movement from the first position to the second position.
- a second side view of the diffuser section is shown, with guiding means 3 configured to perform a movement following a curved line 36.
- the guiding means 3 define a third position between the first and second position. In this position, the first end 31 is far from the outlet opening 22, freeing the area closest to the outlet of obstacles for the air and decreasing the pressure loss caused by having the first end 31 exactly at the outlet of the flow. Moreover, in this position, the guiding means 3 is hidden from view by a user inside the passenger compartment. It is understood that in the plurality of intermediate positions between the first position and the third position, or in the plurality of intermediate positions between the second position and the third position, the first end 31 of the guiding means 3 is also far from outlet opening 22, but to a lesser extent.
- figure 4A shows a first perspective view of an air diffuser for a vehicle 1, with a casing 2 whose upper edge 223 and lower edge 221 describe a plane parallel to the air inlet or inlet opening 21.
- the ratio between the intensity of the upper airflow and the lower airflow are equal, not penalising the loss of charge neither in the first position nor in the second position.
- the air duct 26 that comes out through the upper part in the second upper deviates the same degrees with respect to the axis 34 as the air duct 26 that comes out through the lower part in the first position.
- the direction of air outlet thus depends on the position of the guiding means 3 and not on the arrangement of the upper edge 223 with respect to the lower edge 221.
- the casing 2 comprises a guide 27, through which at least one connected or protruding element of the guiding means 3 is moved, in such a way that the displacement of the guiding means 3 is defined.
- the guide 27 retains guiding means 3 in all positions, e.g. by controlling the interference between the protrusion of the guiding means 3 and guide 27.
- This guide 27 can be an opening in one of the sides of the casing 2 that follows the line where the guiding means 3 is to be moved.
- the guide 27 defines an elongated and straight geometry, according to a first mode of embodiment, or a curved "C" geometry, according to a second mode of embodiment.
- Alternative geometries can also be used to define a shift between the first and second position.
- FIG 4A there are vertical blades, configured to be able to modify the direction of the air flow in the horizontal plane, i.e. towards a right or left zone of the interior of the passenger compartment. These vertical blades are arranged in an area adjacent to the inlet opening 21, inside cavity 23.
- figure 4B shows in a figurative way a second perspective view of an air diffuser for a vehicle 1, with a casing 2 whose top edge 223 and bottom edge describe an inclined plane with respect to the direction of airflow in the cavity 23.
- the lower edge 221 is forward in the forward direction of air outlet in the cavity 23 with respect to the top edge 223.
- the casing 2 is asymmetrical on the axis 34, in such a way that the lower wall extends a longer distance to the outlet opening 22 than the upper wall.
- the air flow that circulates through the lower channel 26, when the guiding means 3 is in the first position adheres to the lower wall just at the air outlet, improving addressing.
- This geometry generates a pressure drop in the second position, since in the air outlet the upper wall does not describe such a steep downward slope, in such a way that the direction of flow is not proportional in the first position and in the second position.
- This geometry makes it easier for the air range field to meet technical requirements and the airflow is directed from the waist zone to the passengers' heads. It is understood that, in this configuration, the guiding means 3 also defines a displacement between the first position and the second position, being able to be the straight or curved displacement, as previously defined.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Jet Pumps And Other Pumps (AREA)
- Duct Arrangements (AREA)
- Air-Flow Control Members (AREA)
Abstract
Description
- This patent application concerns an air diffuser for a vehicle according to
Claim 1, incorporating significant innovations and advantages. - Air diffusers are known in the state of the art, installed in instrument panels, with the aim of directing the air towards the interior of vehicle cabins. Usually, these elements have a plurality of blades, a first group of blades in the area furthest away from the passenger compartment to direct the air in a first direction and a second group of blades in the area closest to the passenger compartment to direct the air in a second direction, with this second group of blades being visible. The fact that there is a plurality of blades in the dashboard area means that a lot of space is occupied, with the aesthetic disadvantages that this also implies. For this reason, it is currently intended for the blades of the diffusers to be hidden from the users of the vehicle and for the air outlet slot to take up less space.
- In relation to the aforementioned trend, it is known that the document
EP1331116 has been published, detailing a diffuser for the interior of vehicles which comprises interior walls of the cavity of the air casing with an arched shape in such a way that air adheres to the walls by the Coand effect. The diffuser has a guiding means inside the cavity to guide the air coming out of the nozzle, and an adjusting element to adjust the guiding means. This guiding means is pivotable with respect to the opening, following the direction of the air outlet, before the arched zone. - The disadvantage of
EP1331116 is that the air outlet opening is not optimally directed. This is because, in order to achieve a good Coand effect, the air must be adhered to the arched surfaces inside the cavity in the outlet zone, in such a way that the air is clogged up in that zone. In documentEP1331116 , however, the air is clogged up in the air inlet zone of the diffuser cavity by means of guidance, and then expanded in the zone closest to the air outlet. The widening of the channel in this zone causes the air flow to not be channelled. On the other hand, this solution implies having two elements, a guiding means and another clogging element, which implies greater complication in the assembly. - This invention deals with a diffuser for a vehicle interior with a guiding means in the form of a central blade, arranged inside a cavity of the air diffuser. The guiding means can be moved from the upper zone to the lower zone of the cavity and vice versa, having a plurality of intermediate positions in which two air channels are created. When the guiding means is in the upper or lower zone of the cavity, the guiding means closes one of the two channels. In the air outlet area, the guiding means is parallel to the inner surfaces of the cavity, in such a way that the narrowing of the air in the casing outlet is optimal. The movement of the guiding means is a displacement. In this way the parallelism is kept constant in all the positions of the guiding means, achieving an optimal direction and not penalising any position. At the same time, it simplifies both the complexity of the system, minimising the number of components that make up the set, and the movement of the guiding means itself, improving its reliability.
- When the guiding means or central blade defines a parallel shape, at least in the outlet zone, the direction being right in the air outlet zone, the direction achieved is optimal, since the channel does not expand, losing the direction of the channel, or encounter obstacles before the exit. The closing of any of the two channels is originated by means of the guiding means itself, blocking the exit of air through one of them.
- More particularly, the present invention consists of an air diffuser for a vehicle where the air diffuser comprises a casing, where the casing defines an air inlet opening, an air outlet opening, and a cavity, where the cavity is arranged between the inlet opening and the outlet opening, where the casing comprises a first wall and a second wall, where the first wall is facing the second wall, where the first wall and the second wall define a narrowing of the cavity to the outlet opening, where the air diffuser comprises a guiding means arranged in the cavity, where the guiding means comprises a first end close to the outlet opening. In the diffuser of the present invention, the guiding means is displaceable between a first position, where the first end is arranged adjacent to the first wall, and a second position, where the first end is arranged adjacent to the second wall. In this way, in the first and second position, the guiding means constricts the air against one of the walls of the inner cavity, partially or completely blocking the outlet through one of the channels. In addition, as the end of the guiding means is in the area closest to the air outlet, the air flow is directed to the air outlet, avoiding interference and increasing the efficiency of the system. Adjacent means that it is contiguous or located in the vicinity, being possible that the first end comes into contact with first wall, in the first position of the guiding means, or with the second stop, in the second position of the guiding means.
- In particular, the guiding means can be moved in a number of intermediate positions between the first position and the second position, in such a way that in each intermediate position the guiding means divides the cavity into two channels. The desired effect is to generate better air routing in the area next to the air opening in all positions. The guiding means is configured to control the ratio between the upper and lower flow, in such a way that the flows are equal in a horizontal position. Thus, if the airflow section of a first channel is greater than the airflow section of a second channel, the air extracted through the air outlet opening will be diverted in the direction of the first channel. The higher the ratio between the first channel and the second channel, the greater the direction driven to the output flow.
- More specifically, the casing comprises at least one guide, where at least one guide defines a displacement of the guiding means between the first position and the second position. In this way, the guiding means is displaced between a plurality of positions with high precision.
- Advantageously, the displacement of the guiding means comprises a third position where the third position is intermediate between the first position and the second position, where the first end of the guiding means is far from the outlet opening, the guiding means being in this third position. In this way, freeing each of the output channels from obstacles reduces the load loss.
- According to another aspect of the invention, the displacement of the guiding means comprises a straight or linear movement between the first position and the second position. The straight line or linear displacement to be followed by means of guidance simplifies the structure of the air diffuser, reducing the number of mechanisms required.
- Preferably the first wall comprises a bottom edge and where the second wall comprises a top edge, where the top edge and bottom edge define the outlet opening. Thus, the guiding means faces the edge in the area of the air outlet by blocking the air outlet through one of the channels in the first and second position.
- It should be noted that the upper and lower edges are in a plane substantially perpendicular to the direction of airflow in the cavity. This results in a symmetrical structure of both the casing and the cavity defined by the casing. Depending on the position of the guiding means, a deviation of the air outlet flow in a first direction or in a second direction of equal quantity is thus achieved. In addition, the air outlet to the interior of the vehicle through either of the two channels has optimum intensity and routing.
- Thus, the upper edge and the lower edge are comprised in a plane substantially inclined with respect to the forward direction of the air in the cavity. This results in an asymmetrical structure of both the casing and the cavity defined by the casing. Thus, a deviation of the air outlet flow in a first direction or in a second direction is achieved, depending on the position of the guiding means, of different quantity. Thus, this particular geometry enables the air range field to meet the requirements that the air extracted by the outlet opening directly contact the waist of an passenger arranged inside the vehicle and up to a zone above the passenger's head.
- More in detail, the lower edge is positioned forward of the upper edge in the direction of airflow in the cavity. In this way, the air is directed more optimally towards the upper part of the interior.
- In another embodiment of the invention, the first end is arranged in flush position with the lower edge, the guiding means being in the first position, and where the first end is arranged in flush position with an upper edge, the guiding means being in the second position. In this way, the flow does not find any exit, wall or obstacle that deviates the direction of exit, improving the direction of air of the diffuser. In addition, the walls that define the cavity are continuous, in order to prevent the air flow from encountering possible obstacles that create interference.
- Note that the guiding means comprise a lower surface facing the first wall, and an upper surface facing the second wall, where at least one area of the lower surface is substantially parallel to the second wall, with the guiding means in the first position, and because at least one area of the upper surface is substantially parallel to the first wall with the guiding means in the second position. The parallelism between the guiding means and the walls that define the cavity allows an optimal direction of the air flow. Thus, in the final section, the two channels comprise a constant section, without narrowing or widening said section. This constant section is independent of the position of the guiding means.
- Advantageously, the upper surface of the guiding means is symmetrical to the lower surface of the guiding means with respect to an axis, where the axis is parallel to the air outlet direction. This ensures that the upper airflow and the lower airflow are equal.
- Specifically, at least one area of the upper surface comes into contact with second wall, the guiding means being in the first position, and because at least one area of the lower surface comes into contact with first wall, the guiding means being in the second position. Thus, the gap created between the guiding means and the walls is reduced, preventing more air from becoming clogged and creating turbulence or interference.
- It should be noted that, according to a particular method of embodiment, the first and second walls are concave. The Coand effect allows the air to adhere to the walls following their trajectory. This results in a widening of the cavity and, subsequently, a narrowing of the cavity in the direction of air flow. Alternatively, the narrowing of the airflow is constant and may be constant or of greater quantity in the area near the outlet opening.
- According to a preferential embodiment of the invention, the output comprises a single slot. This eliminates visible horizontal blades and directs the airflow in all directions via this slot.
- In this way, the present invention, in its simplest form, presents a diffuser for a vehicle interior integrated into the dashboard with a single slot, in such a way that all the horizontal blades are eliminated. The air flow is directed in all directions in the vertical plane from a manual or electrical kinematics by positioning the central or guiding means blade in different positions within the diffuser casing.
- The attached drawings show, by way of a non-limiting example, an air diffuser for a vehicle, constituted in accordance with the invention. Other characteristics and advantages of such an air diffuser for a vehicle, which is the subject of this invention, will be evident from the description of a preferred, but not exclusive, embodiment illustrated by way of a non-limiting example in the accompanying drawings in which:
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Figure 1 . A perspective view of the interior of a vehicle with an air diffuser, according to the present invention. -
Figure 2A . A first lateral section view of an air diffuser for a vehicle, with the guiding means in position displaced upwards, according to the present invention. -
Figure 2B . A second lateral section view of an air diffuser for a vehicle, with the guiding means in a position displaced downwards, according to the present invention. -
Figure 2C . A third lateral section view of an air diffuser for a vehicle, with the guiding means in neutral position, according to the present invention. -
Figure 3A . A second lateral section view of an air diffuser for vehicle, with a guiding means configured to make a straight displacement. -
Figure 3B . A first lateral section view of an air diffuser for vehicle, with a means of guidance configured to perform a curved displacement. -
Figure 4A . A first perspective view of an air diffuser for a vehicle, with a casing whose upper and lower edges describe a plane perpendicular to the direction of airflow in the cavity. -
Figure 4B . A second perspective view of an air diffuser for a vehicle, with a casing whose upper and lower edges describe an inclined plane with respect to the forward direction of the air in the cavity. - In view of the aforementioned figures and, according to the adopted numbering, an example of preferential embodiment of the invention can be observed in them, which comprises the parts and elements that are indicated and described in detail below.
-
Figure 1 illustrates a perspective view of the interior of the passenger compartment of avehicle 1 with an air diffuser, including anoutlet opening 22 and aslot 222. One of the objectives of this invention is to reduce the size used for theair outlet slot 222, reducing the surface seen by the user from the inside ofvehicle 1, in such a way that the slot is as narrow as possible. In a preferential embodiment, according to the present invention, the height of the slot seen from inside the cabin of theoutlet opening 22 has a height less than 20 mm and is preferably 12 mm. According to the present invention, the horizontal blades on the outside of the diffuser, as currently used, are removed, leaving a singlerectangular slot 222 in the board. This reduces the space used for the air outlet and by means of a single guiding means 33 the air can be directed in all directions in a vertical plane following a movement of displacement of a guiding means 3. In more detail, theoutlet opening 22 is asingle slot 222. - This unique guiding means 3 manages to direct the flow of air out of the outlet opening 22 in one of the directions, e.g. in a vertical direction of the flow out of the
outlet opening 22. In order to achieve horizontal guidance in a particular embodiment, at least one horizontal blade would be required, placed in the part closest to theinlet opening 21. - As an illustration,
figure 2A presents a first cross-section view of an air diffuser for avehicle 1, with the guiding means 3 in the upwardly displaced position. In this figure you can see the air flow from the inlet opening 21 to theoutlet opening 22. The diffuser comprises a guiding means 3 arranged in acavity 23 defined by acasing 2 comprising afirst wall 24 and asecond wall 25, thecavity 23 being found after theinlet opening 21, following the forward direction of theair duct 26, and before theoutlet opening 22. Thefirst wall 24 and thesecond wall 25 are facing each other and, in a preferential way, they narrow until theoutlet opening 22. The purpose of the guiding means 3 is to guide the air in the outlet opening 22 area towards the top and bottom of the passenger compartment, in a vertical plane. The geometry of the guiding means 3 in combination with the inner walls of thecasing 2 allows air to constrict against the walls andoutlet cavity 23 with greater intensity in the area of theoutlet opening 22. - In particular, the
outlet opening 22 comprises anupper edge 223, aslot 222 and alower edge 221, in such a way that anoutlet opening 22 is formed between theupper edge 223 and thelower edge 221. The guiding means 3, comprises afirst end 31, generating at least oneair duct 26 flow. -
Figure 2A shows the guiding means 3 in the upward position. Anair duct 26 can be seen below the guiding means 3, which exits through the outlet opening 22 in an upward direction. In this figure it can be seen that the guiding means 3 is displaced in a first position. When the guiding means 3 is displaced towards the top, achannel 26 is created which is adhered to thefirst wall 24, at least in the area of theoutlet opening 22. The guiding means 3 is arranged in a position adjacent to the secondupper wall 25, blocking the passage of anupper air duct 26, forcing the air to constrict against thelower wall 24. Thelower surface 32 of the guiding means 3 is parallel to the lower wall orfirst wall 24 of thecasing 2, at least in the area close to theoutlet opening 22. Thus, both thefirst wall 24 and thelower surface 32 are both inclined upwards in relation to a plane parallel to the air inlet incavity 23, in such a way that the air exits through theslot 222 upwards. - More specifically, as can be seen in
figure 2A , thefirst end 31 is flush or aligned with thelower edge 221, in such a way that the air does not encounter obstacles in the path, in such a way that thelower surface 32 and theupper edge 223 form a continuous surface. In a preferential way, at least one area of thefirst wall 24 comes into contact withupper surface 33 of the guiding means 3. Preferably the contact zone is the zone closest to theair outlet opening 22, to optimise airflow routing and avoid a drop-in pressure. The more surface is in contact, the less gap is generated between the two, in such a way that less air is clogged, avoiding the interference that this may generate. -
Figure 2B shows this, a second lateral section view of an air diffuser for avehicle 1, with the guiding means 3 in a position displaced downwards, in according to the present invention. In this figure it can be seen that the guiding means 3 is displaced in a second position. Anair duct 26 can be seen above the guiding means 3, which exits through the outlet opening 22 in a downward direction. When the guiding means 3 is displaced towards the lower part with afirst end 31 adjacent to thefirst wall 24, achannel 26 is created which is adhered to thesecond wall 25 at least in the area next to theoutlet opening 22. The guiding means 3 in this lower position blocks the passage of anair duct 26 adhered to the lower zone, forcing the air to constrict against the upper wall orsecond wall 25. Theupper surface 33 of the guiding means 3 is parallel to the lower wall of thecasing 2, at least in the area of theoutlet opening 22. Both describe a downward slope with respect to a parallel plane to the air inlet incavity 23, in such a way that the air exits through theslot 222 downwards. More specifically, thefirst end 31 is flush with thelower edge 221, in such a way that the air does not encounter obstacles in the way. In a preferential way, at least one area of thefirst wall 24 comes into contact with the bottom surface of the guiding means 3. -
Figure 2C shows a third cross-section view of an air diffuser for avehicle 1, with guiding means 3 in a neutral position. Thus, it can be observed that the guiding means 3 is in an intermediate position, horizontally parallel to the plane of air inlet tocavity 23. In this particular position the air enters through theinlet opening 21 and adheres to thefirst wall 24 and thesecond wall 25 when there are no obstacles, creating anupper channel 26 and alower channel 26. This creates achannel 26 of airflow that exits in a horizontal direction. In this neutral position the ratio of the volume of the upper and lower flow is proportional. - In
figures 2A ,2B and 3C it can be seen that theupper surface 33 of the guiding means 3 is symmetrical to thelower surface 32 of the guiding means 3 with respect to afirst axis 34 parallel to the air outlet direction. In a preferential way, it can be seen that the shape of thefirst wall 24 and thesecond wall 25 are concave, at least in the area of the outlet opening. This produces the Coand effect, which causes air to adhere to both the upper and lower walls, and exit through the slot in the direction that the wall geometry would follow. - Between the first position of the guiding means 3 and the second position, the guiding means 3 is positioned in a plurality of intermediate positions by dividing the
cavity 23 into twochannels 26. In these intermediate positions, thelower channel 26 or theupper channel 26 is not fully closed by the guiding means 3. This generates a mixture in the air outlet of the upper and lower flow. In the event that the flow with the highest flow is through thelower channel 26 and the flow with the lowest flow is through theupper channel 26, both would come together in the area of theoutlet opening 22 and the resulting direction of this mixture would be slightly towards the upper area of the passenger compartment. - In
figure 3A , it is possible to observe, according to another mode of embodiment, a first view on the side of the diffuser section, with the guiding means 3 configured to make astraight line 35 or linear movement from the first position to the second position. Alternatively, as shown infigure 3B , a second side view of the diffuser section is shown, with guiding means 3 configured to perform a movement following acurved line 36. - In more detail, as shown in
figure 3B , the guiding means 3 define a third position between the first and second position. In this position, thefirst end 31 is far from theoutlet opening 22, freeing the area closest to the outlet of obstacles for the air and decreasing the pressure loss caused by having thefirst end 31 exactly at the outlet of the flow. Moreover, in this position, the guiding means 3 is hidden from view by a user inside the passenger compartment. It is understood that in the plurality of intermediate positions between the first position and the third position, or in the plurality of intermediate positions between the second position and the third position, thefirst end 31 of the guiding means 3 is also far from outlet opening 22, but to a lesser extent. - As an illustration,
figure 4A shows a first perspective view of an air diffuser for avehicle 1, with acasing 2 whoseupper edge 223 andlower edge 221 describe a plane parallel to the air inlet orinlet opening 21. In this mode of embodiment, the ratio between the intensity of the upper airflow and the lower airflow are equal, not penalising the loss of charge neither in the first position nor in the second position. Theair duct 26 that comes out through the upper part in the second upper deviates the same degrees with respect to theaxis 34 as theair duct 26 that comes out through the lower part in the first position. The direction of air outlet thus depends on the position of the guiding means 3 and not on the arrangement of theupper edge 223 with respect to thelower edge 221. - Depending on the method of embodiment shown in
figure 4A , thecasing 2 comprises aguide 27, through which at least one connected or protruding element of the guiding means 3 is moved, in such a way that the displacement of the guiding means 3 is defined. In addition, theguide 27 retains guiding means 3 in all positions, e.g. by controlling the interference between the protrusion of the guiding means 3 and guide 27. Thisguide 27 can be an opening in one of the sides of thecasing 2 that follows the line where the guiding means 3 is to be moved. Thus, theguide 27 defines an elongated and straight geometry, according to a first mode of embodiment, or a curved "C" geometry, according to a second mode of embodiment. Alternative geometries can also be used to define a shift between the first and second position. - As can be seen in
figure 4A , there are vertical blades, configured to be able to modify the direction of the air flow in the horizontal plane, i.e. towards a right or left zone of the interior of the passenger compartment. These vertical blades are arranged in an area adjacent to theinlet opening 21, insidecavity 23. - Alternatively,
figure 4B shows in a figurative way a second perspective view of an air diffuser for avehicle 1, with acasing 2 whosetop edge 223 and bottom edge describe an inclined plane with respect to the direction of airflow in thecavity 23. Preferably thelower edge 221 is forward in the forward direction of air outlet in thecavity 23 with respect to thetop edge 223. Thecasing 2 is asymmetrical on theaxis 34, in such a way that the lower wall extends a longer distance to the outlet opening 22 than the upper wall. - In this way, the air flow that circulates through the
lower channel 26, when the guiding means 3 is in the first position, adheres to the lower wall just at the air outlet, improving addressing. This geometry generates a pressure drop in the second position, since in the air outlet the upper wall does not describe such a steep downward slope, in such a way that the direction of flow is not proportional in the first position and in the second position. This geometry makes it easier for the air range field to meet technical requirements and the airflow is directed from the waist zone to the passengers' heads. It is understood that, in this configuration, the guiding means 3 also defines a displacement between the first position and the second position, being able to be the straight or curved displacement, as previously defined. - The details, shapes, dimensions and other accessory elements, as well as the components used in the implementation of the air diffuser for a
vehicle 1, may be conveniently replaced by others that are technically equivalent, and do not deviate from the essentiality of the invention or from the scope defined by the claims listed below. -
- 1 vehicle
- 2 casing
- 21 inlet opening
- 22 outlet opening
- 221 bottom edge
- 222 slot
- 223 top edge
- 23 cavity
- 24 first wall
- 25 second wall
- 26 channel
- 27 guide
- 3 guiding means
- 31 first end
- 32 lower surface
- 33 upper surface
- 34 axle
- 35 straight line
- 36 curved line
Claims (15)
- Air diffuser for a vehicle (1), where the air diffuser comprises a casing (2), where the casing (2) defines:- an air inlet opening (21),- an air outlet opening (22), and- a cavity (23), where the cavity (23) is arranged between the inlet opening (21) and the outlet opening (22),where the casing (2) comprises a first wall (24) and a second wall (25), where the first wall (24) is facing the second wall (25), where the first wall (24) and the second wall (25) define a narrowing of the cavity (23) to the outlet opening (22), where the air diffuser comprises a guiding means (3) arranged in the cavity (23), where the guiding means (3) comprise a first end (31) close to the outlet opening (22), characterised in that the guiding means (3) is displaceable between a first position, where the first end (31) is arranged adjacent to the first wall (24), and a second position, where the first end (31) is arranged adjacent to the second wall (25).
- Air diffuser according to Claim 1, characterised in that the guiding means (3) can be moved in a plurality of intermediate positions between the first position and the second position, in such a way that in each intermediate position the guiding means (3) divides the cavity (23) into two channels (26).
- Air diffuser according to any of the above claims, characterised in that the casing (2) comprises at least one guide (27), where at least one guide (27) defines a displacement of the guiding means (3) between the first position and the second position.
- Air diffuser according to Claim 3, where the displacement of the guiding means (3) comprise a third position, where the third position is intermediate between the first position and the second position, where the first end (31) of the guiding means (3) is far from the outlet opening (22) with the guiding means (3) in this third position.
- Air diffuser according to Claim 3, where the displacement of the guiding means (3) comprise a straight movement between the first position and the second position.
- Air diffuser according to any of the above claims, where the first wall (24) comprises a bottom edge (221) and where the second wall (25) comprises a top edge (223), where the top edge (223) and bottom edge (221) define the outlet opening (22), where the first end (31) is configured to remain facing the top edge (221), with the guiding means (3) in the first position, and where the first end (31) is configured to remain facing the bottom edge (223), with the guiding means (3) in the second position.
- Air diffuser according to Claim 6, where the upper edge (223) and lower edge (221) are comprised in a plane substantially perpendicular to the forward direction of the air in the cavity (23).
- Air diffuser according to Claim 6, where the upper edge (223) and lower edge (221) are comprised in a plane substantially inclined with respect to the forward direction of the air in the cavity (23).
- Air diffuser according to Claim 8, where the lower edge (221) is positioned forward of the upper edge (223) in the forward direction of the air in the cavity (23).
- Air diffuser according to Claim 6, where the first end (31) is arranged flush with the lower edge (221) with the guiding means (3) in the first position, and where the first end (31) is arranged flush with an upper edge (223), with the guiding means (3) in the second position.
- Air diffuser according to any of the above claims, where the guiding means (3) comprise a lower surface (32) facing the first wall (24), and an upper surface (33) facing the second wall (25), where at least one zone of the lower surface (32) is substantially parallel to the second wall (25), the guiding means (3) being in the first position, and because at least one zone of the upper surface (33) is substantially parallel to the second wall (26), the guiding means (3) being in the second position.
- Air diffuser according to Claim 11, characterised in that the upper surface (33) of the guiding means is symmetrical to the lower surface (32) of the guiding means with respect to an axis (34), where the first axis (34) is parallel to the direction of air outlet.
- Air diffuser according to any of the Claims 11 or 12, where at least one area of the upper surface (33) comes into contact with second wall (25), with the guiding means (3) in the first position, and because at least one area of the lower surface (32) comes into contact with first wall (24), with the guiding means (3) in the second position.
- Air diffuser according to any of the above claims, characterised in that the first wall (24) and the second wall (25) are concave.
- Air diffuser according to any of the above claims, characterised in that the outlet (21) comprises a single slot (222).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201830963A ES2752875A1 (en) | 2018-10-05 | 2018-10-05 | Air diffuser for a vehicle (Machine-translation by Google Translate, not legally binding) |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3632726A1 true EP3632726A1 (en) | 2020-04-08 |
EP3632726B1 EP3632726B1 (en) | 2023-04-26 |
Family
ID=68342864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19382867.0A Active EP3632726B1 (en) | 2018-10-05 | 2019-10-07 | Air diffuser for a vehicle |
Country Status (2)
Country | Link |
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EP (1) | EP3632726B1 (en) |
ES (2) | ES2752875A1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111559226A (en) * | 2020-04-20 | 2020-08-21 | 爱驰汽车有限公司 | Automobile air outlet structure |
CN113427975A (en) * | 2021-07-31 | 2021-09-24 | 重庆长安汽车股份有限公司 | Air conditioner air outlet structure and vehicle |
WO2021206649A1 (en) * | 2020-04-10 | 2021-10-14 | Ecoplas Otomoti̇v San. Ve Ti̇c. A.Ş. | Diffusor structure that enables to control airflow direction |
US11280517B1 (en) * | 2020-09-25 | 2022-03-22 | Ultra Manufacturing Limited | Air vent with rotating control elements and a central element defining channels and method of controlloing air flow via same |
CN114211939A (en) * | 2021-11-15 | 2022-03-22 | 南京塔塔汽车零部件***有限公司 | Air guide structure of automobile air outlet, automobile air outlet and automobile |
EP4046836A1 (en) * | 2021-02-08 | 2022-08-24 | Seat, S.A. | Air diffuser for a vehicle |
DE102022202705A1 (en) | 2022-03-18 | 2023-09-21 | Volkswagen Aktiengesellschaft | Ventilation vents, ventilation system and motor vehicle |
DE102022204608A1 (en) | 2022-05-11 | 2023-11-16 | Volkswagen Aktiengesellschaft | Flow outlet device and motor vehicle |
WO2024002591A1 (en) * | 2022-06-28 | 2024-01-04 | Mercedes-Benz Group AG | Air vent for ventilating an interior of a vehicle, and vehicle |
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- 2019-10-07 ES ES19382867T patent/ES2945557T3/en active Active
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EP1331116A2 (en) | 2002-01-25 | 2003-07-30 | Adam Opel Ag | Air nozzle |
DE102005027746A1 (en) * | 2005-06-16 | 2006-12-21 | Volkswagen Ag | Air outlet for passenger cabin of vehicle, comprises transversal bridges with triangular cross sections and movable elements with curved rear areas |
JP2007196942A (en) * | 2006-01-30 | 2007-08-09 | Howa Kasei Kk | Register |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021206649A1 (en) * | 2020-04-10 | 2021-10-14 | Ecoplas Otomoti̇v San. Ve Ti̇c. A.Ş. | Diffusor structure that enables to control airflow direction |
CN111559226A (en) * | 2020-04-20 | 2020-08-21 | 爱驰汽车有限公司 | Automobile air outlet structure |
US11280517B1 (en) * | 2020-09-25 | 2022-03-22 | Ultra Manufacturing Limited | Air vent with rotating control elements and a central element defining channels and method of controlloing air flow via same |
EP4046836A1 (en) * | 2021-02-08 | 2022-08-24 | Seat, S.A. | Air diffuser for a vehicle |
CN113427975A (en) * | 2021-07-31 | 2021-09-24 | 重庆长安汽车股份有限公司 | Air conditioner air outlet structure and vehicle |
CN114211939A (en) * | 2021-11-15 | 2022-03-22 | 南京塔塔汽车零部件***有限公司 | Air guide structure of automobile air outlet, automobile air outlet and automobile |
CN114211939B (en) * | 2021-11-15 | 2023-02-24 | 南京塔塔汽车零部件***有限公司 | Air guide structure of automobile air outlet, automobile air outlet and automobile |
DE102022202705A1 (en) | 2022-03-18 | 2023-09-21 | Volkswagen Aktiengesellschaft | Ventilation vents, ventilation system and motor vehicle |
DE102022204608A1 (en) | 2022-05-11 | 2023-11-16 | Volkswagen Aktiengesellschaft | Flow outlet device and motor vehicle |
WO2024002591A1 (en) * | 2022-06-28 | 2024-01-04 | Mercedes-Benz Group AG | Air vent for ventilating an interior of a vehicle, and vehicle |
Also Published As
Publication number | Publication date |
---|---|
ES2752875A1 (en) | 2020-04-06 |
ES2945557T3 (en) | 2023-07-04 |
EP3632726B1 (en) | 2023-04-26 |
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